Know your flow - The key to better prediction and successful innovation

Haines, A. B.

doi:10.2514/6.1998-221

Cited by 8 publications

(2 citation statements)

References 2 publications

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“…On the basis that it is important to understand the flow that is to be controlled before controlling it (7) , we introduce and describe flows that benefit from some form of control in this section.…”

Section: Flows That Need To Be Controlledmentioning

confidence: 99%

A review of recent developments in flow control

2005

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This paper reviews and highlights recent developments of certain aspects of flow control concerned with reducing the drag of, and delaying flow separation on, wings and bodies over which the flow is turbulent. The study is restricted to devices that extend beyond the viscous sub-layer but are on a smaller scale than geometric features of the aircraft (e.g. wing chord).The review is mainly concerned with developments within the UK, although significant developments in other countries are discussed.The review discusses types of flow that need to be controlled, basic features of flow control devices and applications. It concludes with recommendations for future research.

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Section: Flows That Need To Be Controlledmentioning

confidence: 99%

A review of recent developments in flow control

2005

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“…The control of flow separation of boundary layers is a significant scope of development in fluid mechanic applications in order to mitigate severe energy losses associated [1][2][3]. Besides weight and space savings, optimum flow separation control also provides positive opportunities in terms of increased system performance and consequent energy conservation especially for civil transport and combat aircrafts as they are regularly exposed to full and partial flow separation during operation.…”

Section: Introductionmentioning

confidence: 99%

The potential of hybrid micro-vortex generators to control flow separation of NACA 4415 airfoil in subsonic flow

Jumahadi¹,

Saad²,

Idris³

et al. 2018

AIP Conference Proceedings

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Abstract. Boundary layer separation is detrimental to the lift and drag of most aeronautical applications. Many vortex generators (VG), both passive and active have been designed to reduce these drawbacks. This study targets to investigate the effectiveness of hybrid micro-VGs, which combine both active and passive micro-VGs in controlling separation under subsonic conditions. NACA 4415 airfoils installed with passive, active and hybrid micro-VGs each are designed, 3D printed, and tested in a wind tunnel at 26.19 m/s under Re = 2.5x10 5 . The lift and drag measurements from a 3-component force balance prove that hybrid micro-VGs increase lift by up to 21.2%, increase drag by more than 11.3% and improve lift-to-drag ratio by at least 8.6% until up to 33.7%. From this research, it is believed that hybrid micro-VGs are competitive to the performance of active VGs and a better configuration is to be considered to reduce parasitic drag and outstand active VGs.

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A Review of Flow Control Research at Dera

Ashill

Fulker

1999

IUTAM Symposium on Mechanics of Passive and Active Flow Control

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Know your flow - The key to better prediction and successful innovation

Cited by 8 publications

References 2 publications

A review of recent developments in flow control

A review of recent developments in flow control

The potential of hybrid micro-vortex generators to control flow separation of NACA 4415 airfoil in subsonic flow

A Review of Flow Control Research at Dera

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